01 - In a mixing bowl, whisk together olive oil, lemon juice, minced garlic, oregano, thyme, paprika, salt, and pepper. Add the chicken breasts, turning to coat evenly. Cover and refrigerate for at least 20 minutes, or up to 2 hours for deeper flavor.
02 - Heat olive oil in a saucepan over medium heat. Add the rice and stir for 1 minute until lightly toasted. Pour in water and salt, bring to a boil, then cover, reduce heat to low, and simmer for 12 to 15 minutes. Remove from heat and let rest, covered, for 5 minutes. Fluff with a fork before serving.
03 - Combine Greek yogurt, grated and squeezed cucumber, chopped dill, minced garlic, olive oil, lemon juice, salt, and pepper in a bowl. Stir thoroughly until smooth and well blended. Cover and refrigerate until ready to serve.
04 - Preheat a grill pan or skillet over medium-high heat. Remove chicken from the marinade and grill for 5 to 6 minutes per side, until the internal temperature reaches 165°F and the juices run clear. Transfer to a cutting board and rest for 5 minutes before slicing against the grain.
05 - Divide the fluffed rice among four bowls. Arrange sliced grilled chicken, diced cucumber, halved cherry tomatoes, sliced red onion, Kalamata olives, and crumbled feta over the rice in sections. Spoon tzatziki generously over the top and finish with fresh parsley or dill and lemon wedges.